Catch
Auto-translated
The most surprising thing is that I hear this from many people who are convinced that it helps. Although, personally, I don't see any connection.
I don't know how it works with CM, but back in the day, I generated a lot of random maps using 8mm6a. With a clean folder, the resource spawns really do appear more evenly distributed and the maps are more playable. I know it sounds strange, but that's the kind of magic it is...